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July 26, 2014

Homework Help: statistics

Posted by jansa on Thursday, May 5, 2011 at 5:48pm.

1. A random sample of n = 16 scores is selected from a normal distribution with a mean of = 50 and a standard deviation of = 10.
What is the probability that the sample mean will have a value between 45 and 55?
What is the probability that the sample mean will have a value between 48 and 52?
What range of values has a 95% probability of containing the sample mean?

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